In today's world, silicon carbide ceramic products are ubiquitous. Not only because it is a wide variety, but also because the properties of silicon carbide ceramic products itself is excellent, can be applicable to a variety of areas. Silicon carbide products are defined in a variety of ways, there is no uniform argument. Silicon carbide products can be divided into many categories, according to different use of the environment, divided into distinct types. Generally used to more mechanical. For example, the use of mechanical seals, can be called silicon carbide seal ring, can be separated into stationary ring, rotating ring, flat ring. Can also be based on customer needs, to produce a variety of shapes of silicon carbide products, such as silicon carbide shaped parts, silicon carbide, silicon carbide ring, etc. Therefore, the definition of silicon carbide products is roughly based on the definition of materials and specifications, the use of silicon carbide materials to produce a variety of shapes, specifications of silicon carbide products.